Clean-out bailer



Oct. 28 ..1924.

v R. c. BAKER CLEAN-OUT BAILER Filed July 2O 1922 w ff ,ew z/ i Hf Patented` Oct. 28, 1924.

PATENT oFFlcE.

REUBEN c. BAKER, or coALINGA, CALIFORNIA, AssrGNon To nAxnnlcA'srNe sHoE ooMrANY, or Los ANGELES, CALIFORNIA, A conPonATroN or. .cAL1FonN1A- CLEAN -OUT BAILER.

Application mea July 2o, 1922. serial 110.576,332.

To all whom t may coaccrm.v

Be' it known that I, REUBEN C. BAKER, a citizen of the UnitedStates, residing at Coalinga, county of Fresno, and State of 5 California, have invented new and useful Improvements in Clean-Out Bailers, of which the following is) a specification.

This invention relates to deep wellequip,- ment and particularly pertains toV a clean out bailer.

During the operation of oil wells, sandand shale often enters thebottom'vbf the l'well and shuts olf the ingress of the oil.

At the present time there are several devices in use which were designed for cleaning the well bottoms of such obstruction. However, the sand and shale in some instances becomes packed and offers such resistance that the devices mentioned are useless, necessitating the rigging up of the 'drilling equipment. This last operation' is expensive and causes considerable delay. It is the object of the present invention, therefore, to pro'- vide an improved form of device which may be employed to thoroughly clean wells, removing sand, shale,'and'1ike formations, lthe device being simple in construction and eliicient in ope-ration.

The invention contemplates the use of a. cylindrical structure' having a plurality of peculiarly formed cutting blades mounted at its lower end, these blades being adapted to penetrate and loqsen the formation encountered, vso that it may be forced upce wardly into the structure and entrapped,

and thereafter removed from the well. One form which the invention mayassume is exemplified in the following description and illustrated by way ofl ex- 40 ample in the accompanying drawlngs, in

` which:

Fig. 1 is a viewv in side elevation of a device embodying the Lpresent invention.

Fig. 2 is a similar view partly in section. Fig. 3 is a longitudinal section disclosing `the construction of the device.

Referring more particularly to the drawings, 10 indicates a cylindrical body member formed at its lower end with exterior 5e threads 11 for the rece tion of a cutting head 12. This head is ormed with a pair of downwardl extending segmental cutting blades 13. These bladesas shown in the drawings, are of different lengths and are formed with oppositely inclined angula cutting ends 14.

Formed in the head member 12 is an annular shoulder 15 which cooperates with the lower end of th'ebody member 10 to rigidly support a valve plate 16. This plate is apertured as `at 17 andis provided with 4a flap valve 18. This valve is hingedly connected to the plate 16 and is normally maintained in closed position over theaperture '17 by gravity action. 7"

chargmg any material within the device f [when it is drawn from the well. When the device is to be lowered into the well thev discharge opening may be closed by simply turning the sleeve 20 until the opening 21 therein is out of register with the opening 21 in the body member.

The upper end of the body memberl() is interiorly threaded as at 22 for reception -of a pipe 23 which may be of any desired length and isprovided with a bail 241 This bail may be connected to a cable by which the deviceA may be raisedor lowered in the well as desired. However, this feature is of little importance as the device may be connected to any other Aform of operating mechanism.

In operation the device is assembled as shown in the drawings and the sleeve 20` positioned rso that the openings 21 are out of register. The device may then be lowered in the well until it encounters the material to be removed.` Whenk the cutting blades 13 encounter the material to be removed vfrom the well, the weight of the device will cause them to loosen the material adjacent the well casing, causing a core to be formed. Continued downward movement of thedevice, due to its weight, will cause the saidl chamber.

, From the foregoing it will be seen thatv times in quick succession. This causes the' device to rotate due to the angle of the cutti ends of the blades. Such rotation ex-V p ites the loosening of the material for passage through the valve and into the main the device here disclosed, while simple in construction, is very eilicient in operation and rovides a mechanism, by the use of whicliJ well bottoms may be thoroughly cleaned at a minimum expense and without delayI WhileI have shown the preferred form of my invention as now known to me,.it will be made in the combination, construction and arrangement of parts by those skilled in the art, without departing from the spirit of the invention as claimed.

Having thus described my invention, what I claim and desire to secure by'Letters Patent is:

1. A clean-out bailer comprising a cylindrical body member having a pair of downwardly extending cutting blades of different lengths formed at its lowermost end,

and a normally closed flap valve mounted within said body member justv above said blades.

2. A clean-out bailer comprising a cylindrical body member having a pair of downwardly extending segmental cutting blades having angular lower ends, and a normall closed flap valve in said body member ad jacent its lower end.

3. A clean-out bailer comprising a cylindrical body member having a plurality of downwardly extending segmental lcutting blades of differentlengths' formed at its lower end and blades having oppositely inclined lower ends, saidbody'member having a discharge opening formed therein, a turnable; sleeve memberI mounted on said body member and formed with an o ning therein which may be registered with the opening in said body member, and a normally 1,51a,os3

closed flap valve mounted in said body member adjacent its lower end.

4. A' clean-out bailer comprising a cylindrical body member having a plurality of downwardly extending cutting blades of different lengths formed at its lowermost end, said cutting blades having angular lower ends, said blades adapted to penetrate and loosen the material to be removed when the device is lowered into a well, and means for trapping said material within said body member so that it may be removed from the well with said member.

5.'A clean-out bailer comprising a cylin- 'drical body member having a plurality of downwardlyextending cutting bladesof difka closure for said openmg. be understood that various changes might adapted to penetrate and loosen the material to be removed from the well when the device is lowered therein, and means for trapping said material within said body member so that it may be removed from the well with said member.

7. A clean-out bailer comprising a cylindrical body member having a pair, of downwardly extending cutting blades of different lengths formed at its lowermost end, said cutting blades being segmental and having angular lower ends, said cutting blades adapted to penetrate and loosen the material to be removed from the well when the device is lowered therein, means for trapping said material within said body member so that it may be removed from the well with said member, said vbody member having a discharge opening formed in the side thereof, and a turnable closure member for said opening whereby the opening may be closed during the operative period of the device and opened to discharge the material trapped in the body member. v

REUBEN o. BAKER. 

